FOOTNOTES:
[A] See Les Batailles de la Marne (Die Schlachten an der Marne), by An Officer of the German General Staff. Translated from the German by Th. Buyse. Van Œst & Cie, Paris, 1917.
[B] Going into detail, we may point out that 60 kilometres of fire and communication trenches are included in the area of the front line organised defensively for a single division occupying but a very narrow sector.
[C] For information on this subject, consult Les Établissements d'artillerie belges pendant la guerre, by Captain Willy Breton. Berger-Levrault, Paris and Nancy, 1917.